| District | Winner | Runner-Up | Other | Total Votes | |||||
|---|---|---|---|---|---|---|---|---|---|
| District 01 | John Larson* (D) | 198,802 | 73.0% | John Halstead (R) | 73,601 | 27.0% | 0 | 0.0% | 272,403 |
| District 02 | Rob Simmons* (R) | 166,412 | 54.2% | Jim Sullivan (D) | 140,536 | 45.8% | 130 | 0.0% | 307,078 |
| District 03 | Rosa DeLauro* (D) | 200,638 | 72.4% | Richter Elser (R) | 69,160 | 25.0% | 7,182 [+] | 2.6% | 276,980 |
| District 04 | Chris Shays* (R) | 152,493 | 52.4% | Diane Farrell (D) | 138,333 | 47.6% | 4 | 0.0% | 290,830 |
| District 05 | Nancy Johnson* (R) | 168,268 | 59.8% | Theresa Gerrantana (D) | 107,438 | 38.2% | 5,741 [+] | 2.0% | 281,447 |
| Total R vote: 629,934 (44.1%) Total D vote: 785,747 (55.0%) | |||||||||